Piston packing-ring.



J. A. BERGER.

PISTON PACKING RING. APPLICATION IILIBD umu, 1914,

1,106,539,, Patented. Aug". 11, 19M.

[21 van for,

EVW a. 72% w am UNITE earns ATNT manic.

JAMES A. BER-GER, OF SCHENECTADY, NEW YORK.

PISTON PACKING-RING.

Specification of Letters Patent.

lPatented Aug. 11, 1914..

Application filed January 14.. 1914. Serial at. 812,129.

. described and subsequently claimed.

Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein.

Figure 1 of the drawings'is a central longitudinal section of the piston of an ordinary gas-engine provided with my improved packing-rings. Fig. 2 is a plan view of the inner side of one of the divided ring members. Fig. 3 is a similar View of the other divided ring-member. Fig. 4 is a view in perspective on a larger scale, showing the manner in which the ring members interengage and are prevented from relative rotative movement.

The principal objects of the invention are to adapt a piston of a gas-engine, or the like, for tightengagement with the cylinder within which-the piston operates; and to prevent relative rotation of one ring-member upon another without materially weakening the rings or reducing their area of I contact with the cylinder.

In carrying out my invention I employ two divided ring members, 1 and 2, one of which is superimposed upon the other, breaking joints therewith. Each of these ring members is substantially lL-shaped in crosssection, the member, 1, having a flange 8, extending along its outer edge, and the member, 2, having a flange, 4, extending along its inner edge, said flanges lapping each other in the complete ring, and having a Z-shaped line. of separation, forming a rabbet-joint between the ring members substantially throughout their extent. The ring-member, 1, has the inner side of the ends of its body-portion notched, as shown at 5, whereby it is adapted to receive and engage an abutment, (3, formed on the flange, 4, of the ring-member, 2, to prevent relative rotative movement of the ring members.

In order that the ring, 2, may not be weak-' 'ened at the point where the abutment, (3,

is located, I form the abutment, (5, as an integral projection from the flange, 4, of the ring-member, 2. In order to do this, I first make the ring-member, 2, with its edgeflange, 4, the full height of the abutment, (3, and then plane or grind away said flange to point where the abutment is to be located. By providing an abutment in this manner, the ring is left of full strength and the danger of breaking the ring at the point where the abutment is located is eliminated.

\Vhat I claim as new and desire to secure by Letters Patent is:

A piston-packing ring comprising upper and lower divided ring-members breaking joints with each other, the lower ring-member having an external horizontal flange along its lower edge and an upwardly extending flange along its inner edge and having a lug formed as an integral upward projection on said upwardly extending flange, the upper ring-member having a depending flange along its outer edge overhanging the external horizontal flange on the lower ringmember and an internal horizontal flange along its upper edge overhanging said upwardly extending flange on the lower ringmember except opposite said lug where-at said internal horizontal flange is notched to engage said lug.

In testimony whereof, I have hereunto set my hand this 9th day of January, 1914.

JAMES A. BERGER. j ,Witnesses:

VIc'roR LAVACCHIMI, JAMES P. CHALMERS.

reduce it to the proper height, except at the i 

